I not sure about having an RF on a LF camera... The Tek is heavy, and not comfortable hand holding it for long, not much of an area to read focus, having a larger GG to focus and compose on is one of the best features of sheet film cameras, if camera is on tripod, you have to move set camera around to get the narrow RF FOV to find the spot to focus on, and RF units could drift their alignment over time and use... Seems to be a good feature, but just relied on GG or focus distance scales and skipped the RF feature until I forgot it was on there...

Yea, the press and wedding guys used them, but I think might have been more of a kludge looking for a solution...

Steve